Interleaving device for printing machines



Feb. 21, 1928.

T. w. HORN INTERLEAVING DEVICE FOR PRINTING MACHINES Filed June '7. 1926 5 Sheets-Sheet 1 Feb. 21, 1928. 1,660,075

T. W. HORN INTERLEAVING DEVICE FOR PRINTING MACHINES Filed June '7. 1926 I5 Sheets-Sheet Z I I, I'll, [ya/enter. J 4

M MMYM ga T. W. HORN INTERLEAVING DEVICE FOR PRINTING MACHINES Feb. 21, 1928.

1 Filed June '7. 1926 3 Sheets-Sheet 3 l I l E 1 IMHHHHM \IIMTHHI I gnvewtcc mm 35% M GU02 mugs Patented Feb. 21, i928. I

PATENT OFFICE.

THOMAS HORN, OI CLEVELAND, OHIO.

INTER-LEAVING DEVICE FOR PRINTING IAQHIN'IS- Application filed June 1, 1926. Serial :0. 114.com. v

This invention relates to an interleaving device for printing machines by which sli sheets of absorbent paper are interleave with the freshly printed sheets delivered I from the printing machine to revent smearing of the printed sheet and setting of the impressions from the printed sheet to the back of a superimposed printed sheet, the device of the present invention being herein illustrated as a plied to a stencil machine of the rotary cyiinder type.

It is the aim of the present invention to provide an interleaving mechanism which is simple in construction, inexpensive to manufacture, reliable in operation and easily ,at-

tachable to standard rinting machines.

A further object o the invention is to provide a slip feeding mechanism which will cooperate with the rinting mechanism in such I manner as to d iver the slip sheets on to theprinted sheets without sliding of one sheet upon the other and consequently'without smearing of the printed sheets.

A further object of the inventionis to provide a slip sheet feeding mechanism which operates continuously and which delivers the slip sheets to the receiving receptacle substantially, simultaneously with the delivery of the printed sheets thereto.

A further object is to feeding attachment in w magazine is mounted directly above the printing mechanism in a position convenient for the operator and further to so mount the as feeding attachment that it does not in any the printing mechanism.

A further object is to so mount the slip sheet feeding attachment that it can be rea 4o ily shifted to a position clear of the print ing mechanism to permit access thereto.

With the above and other objects in view the invention may be said to comprise a de vice as illustrated in the accompanying po drawings hereinafter described and particularly set forth in the appended claims together with such variations and modifications' thereof as will be apparent to one skilled in the art to which the invention appertains.

Reference s 'ould be had to the accompanying drawings forming a part of this specification in which: a

Fi 1 is a side elevationof a stenciling machine with a slip sheet feeding attachment thereon. 6

' against ed upon plrovide'a slip sheet ich the slip sheet Fig. 2 is a longitudinal vertical section through the stencilmg machine and slip sheet feeding attachment.

Fig. 3 is a top plan view of a stenciling machine with a slip sheet feeding device thereon.

Fig. 4 is a side elevation of the cylinder and slip sheet feeder attachment. 'In the accompanying drawings the present invention is illustrated as applied to a sten- -oiling machine of the rotary cylinder typp, 1

the machine shown herein having a suita supporting frame 1, a printing cylinder 2 and impression roller 3 yieldingly pressed the under side of the cylinder 2 by means of a spring 4. The sheets to be printare' supported in a suitable magazine 5 and are delivered one at a time to the printing cylinder by suitable feedin mechanism including the feed roll 6 by w i'ch the sheets are advanced into the space between the cylinder 2 and the roller 3 from which the sheets are delivered into a suitable receiving receptacle 7 at the rear of the printmg machine. described is old and well known and a more detailed description thereof is therefore thou ht to be unnecessary, it-bein suflicient for t e purpose of illustrating the present invention that the sheets of paper be taken one at a time from the magazine 5 be printed I The printing machine so far upon and delivered successively into the receiving receptacle 7.

The resent invention consists of a device for delivering a slip sheetv on top of each and this slip sheet feedinghdevice comprises a suitable magazine 8 whic is adapted to be supported directli above the printing cylinder and suitable eet feeding mechanism asway interfere with thenormal operation of printed sheet delivered into the receptacle 7 sociated with this magazine for delivering the slip sheets onedge into the rece tacl in such manner that a slip sheet will intersed between each pair ofsuperimposed printed sheets.

The ma zine 8 is provided with a downwardly 0 -set end rtion 9 which is pivotally connected to a orizontalshaft 10 which 106 extends between the upper rear ends of a. pair of supporting arms 11 which are at tached by clamps 7 frame 1 at opposite ends of the cylinder 2 and extend u wardly and rearwardly {rpm the frame. e downwardly ofi-set portion 9 of the magazine 8 is prov1ded on opposite projecting retaining pins 13 which 12 to opposite sides of the bear against the upper edges of the supporting arms 11 and serve to support the magazine in either of two positions, the pins 13 engaging the arms 11 forwardly of the shaft 10 when the magazine is supported in its operative position shown in full lines in Figs. 1

and 2 and engaging with the arms 11 rear' wardly of the shaft 10 to supportthe maga:

zinc in a position clear of the mechanism as shown in dotted lines in Figs. 1 and 4. v

F or.delivering the slip sheets one at a time from magazine 8 a feed belt 14 1S mountcdin the downwardly offset forward 'provided'with suitable raised projections 18.v

To insure theifeeding of the sheets one at a time from the magazine 8 the edge of the stack'ofsheets adjacent the delivery end of the'magazine is engaged by a pivoted gravity actuated follower 19 and in advance ofthe follower 19 there is a flexible wiper 20 which is preferably in the form of a strip of rubber providedwith 'a'metal bar 21 secured thereto along its forward edge, the wiper being supported on a crank arm 22 which is yieldingly pressed toward the belt by a spring 23, the wiper 20 engaging the belt directl over the supporting idler 17 and actingtoold back any sheets above the lowermost sheet which is being fed forwardly b the belt 14. At the delivery end of the lie lt 14 there-is an adjustable deflector plate 24 which is supported upon the ends of the shaft carrying the roller 16 and retained in adjusted position by nuts 25, at the ends of this shaft. A spur gear 26 is fixed to theshaft' of the roller 15 and this gear meshes with the gear 27 fixed to the shaft 10 upon which the magazine is pivotally 'supported, the gears 26 and 27 permitting the magazine 8 tobe swung about the shaft 10 from operative to inoperative position. The shaft 10 is driven by means of a sprocket chain 28 which runs over a sprocket 29 fixed to the shaft 10 and over a sprocket 30 fixed to a shaft 31 which is in the gear train through whichrthe printing mechanism is'driven.

In the operation of the machine the. print ing cylinder is continuously driven-and the sheets fed one at a time at intervals'from the. magazine 5 are printed upon and delivered I into the receptacle 7. At thesame time the feed belt 14 of the slip sheet magazine is also.

continuously drivenandthe slip sheetsare fed one at a time from the slip sheet magazine. The sheets as they are delivered from downwardly for r the magazine 8 pass over the adjustable doflector plate 24 and the edges thereof come into engagement with a curved guide proectmg upwardly and forwardly from the 'rear end of the receptacle 7, this guide consisting of angle shaped guide bars 32 extending upwardly from the rear corners of the receptacle and one or more intermediate guide bars 30. The slip sheets are guided by the curved. bars toward the rear cndof the'receptacle 7 and when the upper edge, of the sheet passes the deflector plate 24 the sheet will fall forwardly on topof.

the sheet at the top ofth'e pile in the receptacle 7. The operation of the belt 14 is so timed with respect to the rate of delivery of the printed sheets into the receptacle that g I a slip sheet is discharged from the magazine and delivered into the receptacle 7 substan-v tially simultaneously with each printed sheet,

. the printed sheets being delivered horizontally into the receptacle 7 and the slip sheets at an inclination to the horizontal or on, edge so that the, printed sheets can enter completely into the receptacle 7 before the slip sheetfalls from its inclined position to a horizontal position on the top of the pile, the

intervals between the delivery of successive printed. sheets into the receptacle 7 being sufiicient to permit the slip sheets to fall into place on top of printed sheets in the recept-acle. I 4

The continuously operating slip sheet feeding device causes the sheets to'be discharged at a uniform rate one immediately behind another and in order to properly time the delivery of the sheets the movement of the slip sheets from the magazine 8 into the receptacle'7'is slower than the movement of the printed sheets from the cylinder 2 into 'thereceptacle, the more rapid movement of the printed, sheets enabling them to move fully into the receptacle 7 while a slip sheet is falling into placefromabove'. In a rotary stenciling machine such as shown herein about one half of the cylinder is used for printing and one sheetisso fed to the cylinder during each revolution thereof as to be engaged by the printing: portion, the cylinder engaging each sheet during one half of itsrevolution so that the interval between The deflector plate 24 -.is made adjustable to insure the engagement of the'rearmost edges of the slip sheets with the curved guide bars 32 and 33, the plate 24 being adjustable e atively stiff sheets and upwardly for more flexible sheets. *The edges of the slip sheets to be accurately aligned with the rearmost edges of the guide bars 32 and 33 also cause the rearmost printed sheets and cause the slip sheets in falling to horizontal position to pivot about their rearmostedges and fall down upon the printed sheets without any relative sliding motion which would cause smearing of the printed sheets.

Although a preferred embodiment of the invention has been illustrated and described, it should be understood thatthe invention is not limited thereto and is susceptible of such modifications and adaptations as fall within the scope of the appended claims.

Having thus described my invention, I claim:

1. The combination with a printing machine having a receptacle for printed sheets at the rear thereof and means for printing and delivering sheets one at a time rearwardly to the receptacle, of a detachable slip sheet magazine supported above and forwardly of the rear end of said receptacle, and means formed as a unit with said magazine for feeding a slip sheet rearwardly therefrom to the receptacle simultaneously with each printed sheet.

2. The combination with a printing machine having a receptacle for printed sheets at the rear thereof and means for printing and delivering sheets one at a time to the receptacle, of a slip sheet magazine supported above and forwardly of the rear end of said receptacle, means for feeding the slip sheets one at a time rearwardly from said magazine simultaneously with the movement of the printed sheets, and forwardly inclined guides for said slip sheets extending upwardly from the rear end of said receptacle.

3. The-combination with a printing machine-having a receptacle for printed sheets at the rear thereof and mechanism for printing sheets and delivering the same one at a time into the receptacle, of a slip sheet magazine supported above and forwardly of the rear end of said receptacle, and mechanism carried by the magazine for continuously feeding the slip sheets into the receptacle at a slower speed than the printed sheets.

4. The combination with a printing mechanism, of a receptacle at the rear of said mechanism into which printed sheets are delivered by said mechanism, a slip sheet magazine supported above and forwardly of the rear end of said receptacle and continuously operating sheet feeding means associated with said magazine for delivering a slip sheet rearwardly and on edge into said receptacle simultaneously with each printed sheet and for guiding the slip sheets so as to hold them out of contact with the printed sheets while said printed sheets are entering the receptacle.

5. The combination with a printing machine having a printing cylinder, a magazine for sheets to be printed in front of said cylinder, a receptacle for printed sheets in the rear of said cylinder and means for feeding the sheets one at a time from the magazine and past the cylinder into the receptacle, of a detachable slip sheet magazine supported on the rinting machine above and forwardly of tie rear endvof said receptacle, and feeding means forming a unit with said magazine and driven from said machine for delivering slip sheets downwardly and rearwapdly toward the rear end ofsaid receptac e.

6. The combination with a printing ma chine having a printing cylinder, a magazine for sheets to be printed cylinder, a receptacle for printed sheets in the rear of said cylinder and means for feeding the sheets one at a time from the magazine and past the cylinder into the receptacle, of a slip sheet magazine supported on the printing machine above the cylinder and forwardly of the rear end of said receptacle, feeding means associated .with said ma azine and driven from said machine for delivering slip sheets rearwardly, and guiding means for causing them to be delivered substantially on end adjacent the rear end of the receptacle.

7. The combination with a printing machine having a printing cylinder, a magazine for sheets to be printed in front of said cylinder, a receptacle for printed sheets in the rear of said cylinder and means for feed- ,ing the sheets one at a time from the magazine and past the cylinder into the receptacle,of aislip sheet magazine supported on in front of said i the machine above the cylinder, feeding.

means associated with said magazine and driven from said machine for delivering slip sheets to the receptacle. and guides extending upwardly and forwardly from the rear end of the receptacle for directing the slip sheets into the receptacle.

8. The combination with a printingmachine having a receptacle for printed sheets, a printing cylinder and means for continuously feeding sheets past the printing cylinder and delivering the same into the receptaele, of a slip sheet magazine having feed mechanism driven from the printing machine, said magazine being mounted on the machine for movement from an operative position directly above the cylinder to an inoperative position clear of the cylinder.

9i The combination with, a printing machine having a receptacle for printed sheets, a printing cylinder and means for continuously feeding sheets past the printing cylinder and delivering the same into the receptacle, of a slip sheet magazine pivoted to swing about a horizontal axis from a position directly over said cylinder to a position entirel to the rear thereof, feed mechanism carrie by said magazine, and means for driving said feed mechanism from said machine.

int

wardly and ,the'receptacle past the delivery end of the magazine, and feed mechanism carried by the magazine.

11. The combination with a printing machine having a receptacle for printed sheets, afprintin cylinder and means for continuously fee ing sheets past the printing cylinder and delivering the same into the receptacle, of a slip sheet magazine mounted over the cylinder and inclined downwardly and rearwardly, uide members extending uporwardlv from the rear end of the receptacle past the delivery end of the magazine, feed mechanism carried by the magazine, means for driving said feed mechanism from said machine, and an adjustable deflector plate at the delivery end of the magazine.

12. The combination with a printing machine having a rece tacle for printed sheets at the rear thereo and means for printing and delivering-sheets one at a time to the receptacle, of a slip sheet magazine supported above and forwardly of therear end of said receptacle, means for feeding the sli sheets one at a time rearwardly from said magazine simultaneously with the movement of the printed sheets, and guides adjacent the rear end of said magazine in the path of the rear edges of the slip sheets for guiding the rear edges of said sheets to the rear end of said receptacle.

13. The combination with a printing machine having a receptacle for printed sheets at the rear thereof and means for printing and delivering the sheets one at a time to the receptacle, of a slip sheet interleaving device comprising means for feeding a slip sheet on edge into the said receptacle in such manner that the sheet may\ then move from the on-edge position to t e flat position upon top of a printed sheet, and means synchronizing such sli sheet feeding with the delivery of the printed sheets into the receptacle.

14. The combination with a printing machine having a receptacle for printed sheets at the rear thereof and means for printingand delivering sheets one at a time to the receptacle, of a slip sheet interleaving devlce comprising means for feeding a slip sheet on edge into the rear end of said receptacle,

and means synchronizing such slip sheetfeeding with the delivery of the printed sheets into the receptacle.

15. A slip sheet interleaving device adapted to be used with'a printing mechanism of the type having a receptacle for the printed sheets at the rear thereof, and means for printing and delivering the sheets one at a time to the receptacle comprising a magazine for the slip sheets adapted to be connected to the printing mechanism, and means adapted to be operatively connected with the printing and delivering means of the printin mechanism for feeding a slip sheet on e ge into the rear end of the receptacle for the printed sheets.

16. The combination with a printing machine having a receptacle for printed sheets at the rear thereof and means for printing and delivering the sheets one at a time to the receptacle, of a slip sheet magazine having fee means associated therewith and driven from said printing machine for feeding the slip sheets, and guiding means for causing the slip sheets t0"be delivered on edge adjacent the rear end of the rece tacle.

In testimony whereof, I hereunto a 1: my

signature.

' THOMAS WALTER HORN.' 

